Design of Ultra-Low Power Impulse Radios (Analog Circuits by Alyssa Apsel, Xiao Wang, Rajeev Dokania

By Alyssa Apsel, Xiao Wang, Rajeev Dokania

This publication explores the layout of ultra-low energy radios and exhibits how they could shape networks to facilitate a purposes in healthcare and environmental tracking, for the reason that they could function for years off a small battery or harvest strength from the surroundings.

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Extra resources for Design of Ultra-Low Power Impulse Radios (Analog Circuits and Signal Processing)

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26 Effect of frequency mismatch between the receiver and the transmitter [14] zation between the transmitter and receiver is not required for UWB impulse based communication. This is primarily due to use of a non-coherent energy detection based architecture, commonly used in receiver front-ends. e. 26), having very low impact on the overall performance of the system. For higher variation calibration circuitry can also be easily implemented. As only one time or opportunistic calibration will be required, overhead associated with the calibration circuitry can be kept very low.

15c. In such a network, there should not be ideally any concept of a master node, all the nodes should be identical, and the network should be globally synchronized. 1 Synchronization Synchronization is the key bottleneck to realization of duty-cycled radios. 5 Timing Requirements for an Impulse Radio Design: Synchronization 31 Fig. 15 Different Synchronization topologies, a One master node synchronizating the nodes in the local neighborhood of the master nodes b Two master nodes c A globally synchronized network periodic sleep-wake scheduling that limits overall system performance.

9). In these N bins, one bin is always reserved for the sync pulse. This is called the sync bin (aligned with the frame boundary), while data is sent or received in the other bins as decided by the central control block. The system Sync State machine locally detects and maintains synchronization which enables data-communication between nodes. 8 Transmitter Design 45 Fig. 10 Simplest way of generating a wavelet based on carrier-wavelet modulation [7] Fig. 11 Different Modulation schemes with impulse based UWB communication duty-cycling can start, thereby saving power for the system.

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